/*
 * Copyright 2018 The Data Transfer Project Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.datatransferproject.launcher.monitor;

import java.util.function.Supplier;
import org.datatransferproject.api.launcher.JobAwareMonitor;
import org.datatransferproject.api.launcher.Monitor;

/** Forwards monitor events to a set of delegates. */
public class MultiplexMonitor implements JobAwareMonitor {
  private Monitor[] delegates;

  public MultiplexMonitor(Monitor... delegates) {
    this.delegates = delegates != null ? delegates : new Monitor[0];
  }

  @Override
  public void severe(Supplier<String> supplier, Object... data) {
    for (Monitor delegate : delegates) {
      delegate.severe(supplier, data);
    }
  }

  @Override
  public void info(Supplier<String> supplier, Object... data) {
    for (Monitor delegate : delegates) {
      delegate.info(supplier, data);
    }
  }

  @Override
  public void debug(Supplier<String> supplier, Object... data) {
    for (Monitor delegate : delegates) {
      delegate.debug(supplier, data);
    }
  }

  @Override
  public void setJobId(String jobId) {
    for (Monitor delegate : delegates) {
      if (delegate instanceof JobAwareMonitor) {
        ((JobAwareMonitor) delegate).setJobId(jobId);
      }
    }
  }

  @Override
  public void flushLogs() {
    for (Monitor delegate : delegates) {
      delegate.flushLogs();
    }
  }
}
